Perhaps you should try some spelling variations:
danh hau » danh dau, danh cau, doanh chau
ky danh » ky anh, ky dang
hau hoi » cau hoi, huu hoi, phau hoc
hieu ve » hieu va, hieu van
cam luc » cam xuc
hanh ve » hanh vi, hanh va, hanh kem
cau luc » cau truc, cau phuc
hanh de » hanh kem
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
thiet » thieu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky danh hau hoi. hieu ve ((cam luc) or (cau luc)) van ((hanh de) or (hanh ve)) va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky danh hau hoi. hieu ve ((cam luc) OR (cau luc)) van ((hanh de) OR (hanh ve)) va thiet.
• Adding a wildcard symbol may retrieve word variants: te sac ky danh hau hoi. hieu ve ((cam luc) or (cau luc)) van ((hanh de) or (hanh ve)) va thiet*.